I use both...FAZ and FAS give an idea as to how financials are doing as they move three times as fast, but I also watch JPM, WFC, BAC, and C along with MS and GS to give me an idea for how financials are doing. For tech, I track the QQQQ, but also GOOG, AMZN, AAPL, RIMM, CSCO, and MSFT.
Take...